X = int(input())
up = 599
down = 400
i=8
while(i>=1):
    if(X <= up and X >= down):
        print(i)
        break
    else:
        up += 200
        down += 200
        i -= 1 X = int(input()) X int(input()) int input() input up = 599 up 599 down = 400 down 400 i=8 i 8 while(i>=1):
    if(X <= up and X >= down):
        print(i)
        break
    else:
        up += 200
        down += 200
        i -= 1 i>=1 i 1 if(X <= up and X >= down):
        print(i)
        break
    else:
        up += 200
        down += 200
        i -= 1 X <= up and X >= down X <= up X up X >= down X down print(i) print i break up += 200 up 200 down += 200 down 200 i -= 1 i 1 i=8 8 i i -= 1 1 i up += 200 200 up up = 599 599 up down += 200 200 down X = int(input()) int(input()) X down = 400 400 down
X = int(input())
up = 599
down = 400
i=8
while(i>=1):
    if(X <= up and X >= down):
        print(i)
        break
    else:
        up += 200
        down += 200
        i -= 1